Matter
Define Matter
Matter is anything that has mass and takes up space.
Define Mass
Mass describes the amount of matter in an object.
Define weight
Weight is a measure of the gravitational force on an object.
Define Volume
Volume is the amount of space that an object takes up or occupies.
Define Density
Density is the measure of the amount of mass in a given volume.
Are Light and Sound examples of Matter?
NO! They do not take up space or have mass.
Name 2 objects with high mass and 2 objects with lower mass.
High: Desk, Tables, Shelve, Closet...
Low: Notebook, Computers, Pencil, Pencil case, Pen, Eraser...
True or False: The gravitational force between an object and Earth depends partly on the object's mass.
TRUE! As mass increases gravitational force also increases.
True or False: Object with similar volumes always have the same mass.
FALSE! They do not always have the same mass.
What is Density's formula?
D = m / V
Name 6 examples of matter in the class.
Desk, Chair, Table, Board, Markers, Pencil case, Computers, Notebooks, Cellphones, Pen, Book, Pencil, etc.
Name two units of measurements for Mass. And the unint of measurement for Weight.
Mass: Kg, g, lb, oz, mg...
Weight: N (Newtons).
Do austronauts weigh more or less on the moon than they do on earth? Why?
LESS! Because the Moon has a lower mass than the Earth has.
Name 5 units of measurements for VOLUME
ft3, cm3, m3, mm3 , km3, yd3, mi3, etc.
What is Density's unit of measurement?
D = g/cm3
Is air matter?
YES! Air takes up space
How is mass and weight measured?
Mass: Balance
Weight: Spring Scale
What is the weight of an object on the moon?
One-sixth of its weight on Earth.
True or False: 10mL is the same as 1cm3.
FALSE! 1mL is equal to 1cm3.
What is the density of H2O ?
H2O is WATER! Water's density is 1g/cm3
Are solids, liquids, gases and plasma examples of matter? Why?
YES! Because they are made of particles and particles takes up space.
The balance compares an object's mass to know standards of mass called.........
Countermasses
What is the Gravitational Force?
Is the force that keeps objects on Earth from floating into the space.
How do we find volume of an object?
By the formula: V = LxWxH
By using water displacement: with a Beaker or a Graduated Cylinder.
ZINC (Solid) = 7.13 g/cm3
SILVER (Solid) = 10.50 g/cm3
LEAD (Solid) = 11.35 g/cm3
Supose that 273 g of one of the substance listed above displaces 26mL of Water. What is the most likely substance?
SILVER!
D = m/V
DxV = m
26 mL x 10.50 g/cm3 = m in grams
273 g = m